diff --git a/Borepin/Borepin.iOS/Borepin.iOS.csproj b/Borepin/Borepin.iOS/Borepin.iOS.csproj
index 52c9c8d..05c2243 100644
--- a/Borepin/Borepin.iOS/Borepin.iOS.csproj
+++ b/Borepin/Borepin.iOS/Borepin.iOS.csproj
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">iPhoneSimulator</Platform>
     <ProductVersion>8.0.30703</ProductVersion>
@@ -26,7 +27,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <MtouchArch>x86_64</MtouchArch>
-    <MtouchLink>Full</MtouchLink>
+    <MtouchLink>SdkOnly</MtouchLink>
     <MtouchDebug>true</MtouchDebug>
     <CodesignKey>iPhone Developer</CodesignKey>
   </PropertyGroup>
@@ -54,7 +55,6 @@
     <MtouchLink>SdkOnly</MtouchLink>
     <MtouchInterpreter>-all</MtouchInterpreter>
     <MtouchExtraArgs>--optimize=experimental-xforms-product-type</MtouchExtraArgs>
-    <CodesignProvision>iOS Team Provisioning Profile: org.fab-access.borepin</CodesignProvision>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhone' ">
     <DebugType>none</DebugType>
@@ -78,8 +78,8 @@
     <None Include="Info.plist" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="CNFC\Card.cs" />
-    <Compile Include="CNFC\Reader.cs" />
     <Compile Include="CNFC\Hardware.cs" />
+    <Compile Include="CNFC\Reader.cs" />
   </ItemGroup>
   <ItemGroup>
     <InterfaceDefinition Include="Resources\LaunchScreen.storyboard" />
@@ -177,8 +177,10 @@
     <PackageReference Include="Prism.DryIoc.Forms">
       <Version>8.0.0.1909</Version>
     </PackageReference>
-    <PackageReference Include="Xamarin.Forms" Version="4.8.0.1687" />
     <PackageReference Include="Xamarin.Essentials" Version="1.5.3.2" />
+    <PackageReference Include="Xamarin.Forms">
+      <Version>4.7.0.1351</Version>
+    </PackageReference>
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
   <ItemGroup>
diff --git a/Borepin/Borepin.iOS/CNFC/Card.cs b/Borepin/Borepin.iOS/CNFC/Card.cs
index 34a573f..a854481 100644
--- a/Borepin/Borepin.iOS/CNFC/Card.cs
+++ b/Borepin/Borepin.iOS/CNFC/Card.cs
@@ -1,67 +1,67 @@
-using System;
-using System.Threading;
-using CoreNFC;
-using Foundation;
-using NFC;
-using NFC.ISO7816_4;
+//using System;
+//using System.Threading;
+//using CoreNFC;
+//using Foundation;
+//using NFC;
+//using NFC.ISO7816_4;
 
-namespace Borepin.iOS.CNFC
-{
-    public class Card : ICard
-    {
-        private NFCTagReaderSession _session;
-        private INFCMiFareTag _tag;
+//namespace Borepin.iOS.CNFC
+//{
+//    public class Card : ICard
+//    {
+//        private NFCTagReaderSession _session;
+//        private INFCMiFareTag _tag;
 
-        public Card(NFCTagReaderSession session, INFCMiFareTag tag)
-        {
-            _session = session;
-            _tag = tag;
-        }
+//        public Card(NFCTagReaderSession session, INFCMiFareTag tag)
+//        {
+//            _session = session;
+//            _tag = tag;
+//        }
 
-        public void Connect()
-        {
-            var counter = new CountdownEvent(1);
-            NSError err = null;
+//        public void Connect()
+//        {
+//            var counter = new CountdownEvent(1);
+//            NSError err = null;
 
-            _session.ConnectTo(_tag, (error) =>
-            {
-                err = error;
-                counter.Signal();
-            });
+//            _session.ConnectTo(_tag, (error) =>
+//            {
+//                err = error;
+//                counter.Signal();
+//            });
 
-            counter.Wait();
+//            counter.Wait();
 
-            if (err != null)
-            {
-                throw new Exception(err.LocalizedDescription);
-            }
-        }
+//            if (err != null)
+//            {
+//                throw new Exception(err.LocalizedDescription);
+//            }
+//        }
 
-        public void Disconnect()
-        {
-            // TODO: decide on which should be used
-            //_session.RestartPolling();
-            _session.InvalidateSession("card disconnect");
-        }
+//        public void Disconnect()
+//        {
+//            // TODO: decide on which should be used
+//            //_session.RestartPolling();
+//            _session.InvalidateSession("card disconnect");
+//        }
 
-        public APDUResponse Transmit(APDUCommand cmd)
-        {
-            var counter = new CountdownEvent(1);
-            byte[] buf = null;
+//        public APDUResponse Transmit(APDUCommand cmd)
+//        {
+//            var counter = new CountdownEvent(1);
+//            byte[] buf = null;
 
-            _tag.SendMiFareIso7816Command(new NFCIso7816Apdu(NSData.FromArray(cmd.Data)), (response, sw1, sw2, NSError) =>
-            {
-                // reassembly the original apdu message
-                buf = new byte[response.Length + 2];
-                response.ToArray().CopyTo(buf, 0);
-                buf[response.Length + 0] = sw1;
-                buf[response.Length + 1] = sw2;
-                counter.Signal();
-            });
+//            _tag.SendMiFareIso7816Command(new NFCIso7816Apdu(NSData.FromArray(cmd.Data)), (response, sw1, sw2, NSError) =>
+//            {
+//                // reassembly the original apdu message
+//                buf = new byte[response.Length + 2];
+//                response.ToArray().CopyTo(buf, 0);
+//                buf[response.Length + 0] = sw1;
+//                buf[response.Length + 1] = sw2;
+//                counter.Signal();
+//            });
 
-            counter.Wait();
+//            counter.Wait();
 
-            return new APDUResponse(buf);
-        }
-    }
-}
+//            return new APDUResponse(buf);
+//        }
+//    }
+//}
diff --git a/Borepin/Borepin.iOS/CNFC/Hardware.cs b/Borepin/Borepin.iOS/CNFC/Hardware.cs
index e523b9e..c3013a9 100644
--- a/Borepin/Borepin.iOS/CNFC/Hardware.cs
+++ b/Borepin/Borepin.iOS/CNFC/Hardware.cs
@@ -1,24 +1,24 @@
-using System;
-using CoreNFC;
-using NFC;
+//using System;
+//using CoreNFC;
+//using NFC;
 
-namespace Borepin.iOS.CNFC
-{
-    public class Hardware : IHardware
-    {
-        public bool IsAvailable()
-        {
-            return NFCReaderSession.ReadingAvailable;
-        }
+//namespace Borepin.iOS.CNFC
+//{
+//    public class Hardware : IHardware
+//    {
+//        public bool IsAvailable()
+//        {
+//            return NFCReaderSession.ReadingAvailable;
+//        }
 
-        public String[] GetReaders()
-        {
-            return new String[] { "main" };
-        }
+//        public String[] GetReaders()
+//        {
+//            return new String[] { "main" };
+//        }
 
-        public IReader OpenReader(String readerID)
-        {
-            return new Reader();
-        }
-    }
-}
+//        public IReader OpenReader(String readerID)
+//        {
+//            return new Reader();
+//        }
+//    }
+//}
diff --git a/Borepin/Borepin.iOS/CNFC/Reader.cs b/Borepin/Borepin.iOS/CNFC/Reader.cs
index 992eb5e..8ed9671 100644
--- a/Borepin/Borepin.iOS/CNFC/Reader.cs
+++ b/Borepin/Borepin.iOS/CNFC/Reader.cs
@@ -1,66 +1,66 @@
-using System;
-using CoreFoundation;
-using CoreNFC;
-using Foundation;
-using NFC;
+//using System;
+//using CoreFoundation;
+//using CoreNFC;
+//using Foundation;
+//using NFC;
 
-namespace Borepin.iOS.CNFC
-{
-    public class Reader : NFCTagReaderSessionDelegate, IReader
-    {
-        public event ReaderEventHandler CardDiscovered;
-        public event ReaderEventHandler CardLost;
+//namespace Borepin.iOS.CNFC
+//{
+//    public class Reader : NFCTagReaderSessionDelegate, IReader
+//    {
+//        public event ReaderEventHandler CardDiscovered;
+//        public event ReaderEventHandler CardLost;
 
-        private NFCReaderSession _session = null;
-        private DispatchQueue _queue;
+//        private NFCReaderSession _session = null;
+//        private DispatchQueue _queue;
 
-        public void Start()
-        {
-            _queue = new DispatchQueue("NFC Reader Queue", true);
+//        public void Start()
+//        {
+//            _queue = new DispatchQueue("NFC Reader Queue", true);
 
-            // sessions cannot be reused
-            _session = new NFCTagReaderSession(NFCPollingOption.Iso14443, this, _queue)
-            {
-                AlertMessage = "TODO",
-            };
+//            // sessions cannot be reused
+//            _session = new NFCTagReaderSession(NFCPollingOption.Iso14443, this, _queue)
+//            {
+//                AlertMessage = "TODO",
+//            };
 
-            if (_session == null)
-            {
-                Console.WriteLine("Oh no! The session is null!");
-            }
+//            if (_session == null)
+//            {
+//                Console.WriteLine("Oh no! The session is null!");
+//            }
 
-            _session.BeginSession();
-        }
+//            _session.BeginSession();
+//        }
 
-        public void Stop()
-        {
-            _session?.InvalidateSession();
-            _session = null;
-        }
+//        public void Stop()
+//        {
+//            _session?.InvalidateSession();
+//            _session = null;
+//        }
 
-        public override void DidDetectTags(NFCTagReaderSession session, INFCTag[] tags)
-        {
-            Console.WriteLine("Did detect tags");
+//        public override void DidDetectTags(NFCTagReaderSession session, INFCTag[] tags)
+//        {
+//            Console.WriteLine("Did detect tags");
 
-            Console.WriteLine(tags[0].Type);
+//            Console.WriteLine(tags[0].Type);
 
-            //INFCIso7816Tag tag = tags[0].GetNFCIso7816Tag();
-            INFCMiFareTag tag = tags[0].GetNFCMiFareTag();
-            if (tag != null)
-            {
-                Console.WriteLine("Card ist valid");
-                CardDiscovered?.Invoke(this, new Card(session, tag));
-            }
-            else
-            {
-                Console.WriteLine("Card is not ISO7816");
-            }
-        }
+//            //INFCIso7816Tag tag = tags[0].GetNFCIso7816Tag();
+//            INFCMiFareTag tag = tags[0].GetNFCMiFareTag();
+//            if (tag != null)
+//            {
+//                Console.WriteLine("Card ist valid");
+//                CardDiscovered?.Invoke(this, new Card(session, tag));
+//            }
+//            else
+//            {
+//                Console.WriteLine("Card is not ISO7816");
+//            }
+//        }
 
-        public override void DidInvalidate(NFCTagReaderSession session, NSError error)
-        {
-            // TODO: decide what to do
-            Console.WriteLine("reader session invalidated");
-        }
-    }
-}
+//        public override void DidInvalidate(NFCTagReaderSession session, NSError error)
+//        {
+//            // TODO: decide what to do
+//            Console.WriteLine("reader session invalidated");
+//        }
+//    }
+//}